Acceleration of particles near the inner black hole horizon
Acceleration of particles near the inner black hole horizon
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黑洞内部视界附近粒子的加速
DOI：
10.1103/physrevd.85.024029
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发表时间：
2011
影响因子：
5
通讯作者：
O. Zaslavskii
中科院分区：
文献类型：
--
作者：
O. Zaslavskii
本文研究了在无束缚能E_{c.m.}在质心框架中，当两个粒子在黑洞视界附近碰撞时。我们考虑两种不同的情况-当两个粒子（i）在同一方向或（ii）在相反的方向移动。我们还讨论了两个不同的版本的效果-无论是无限的能量可以释放在碰撞（强版本）或能量E_{c.m.}是有限的，但可以做得很大，因为一个喜欢（弱版本）。我们证明了强版本的效果是不可能的情况下（i）和（ii）。在情况（i）中，这是由于在E_{c.m.}形式上在视界上发散，其中一个粒子通过两个视界相交的分叉点，而第二个粒子没有通过，因此不发生碰撞。在情形（ii）中，两个粒子都撞击视界的不同分支。在这两种情况下，只要至少有一个粒子在视界内沿着空间对称的方向从无穷远处开始运动，弱的版本都是可能的。
We study the possibility of obtaining unbound energy E_{c.m.} in the centre of mass frame when two particles collide near the inner black hole horizon. We consider two different cases - when both particles move (i) in the same direction or (ii) in the opposite ones. We also discuss two different versions of the effect - whether an infinite energy can be released in the collision (strong version) or the energy E_{c.m.} is finite but can be made as large as one likes (weak version). We demonstrate that the strong version of the effect is impossible in both cases (i) and (ii). In case (i) this is due to the fact that in the situation when E_{c.m.} formally diverges on the horizon, one of particles passes through the bifurcation point where two horizons meet while the second particle does not, so collision does not occur. In case (ii), both particles hit different branches of the horizon. The weak version is possible in both cases, provided at least one of particles starts its motion inside the horizon along the direction of spatial symmetry from infinity.